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(No Model.)

T. JOHNSON.

VAPOR STOVE. No. 317.946. Patented May 12, 1885.

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THOMAS JOHNSON, OF ST. LOUIS, MIS$OURL ASSIGNOR OF ONE-HALF TO WILLIAM BRANDON, OF SAME PLACE.

STOVE.

SPECIFICATION forming part of Letters Patent No. 317,946, dated May 12, 1885. Application filed May 12, 1884. I (No model.)

To all whom it may concern.-

Be it known that I, THOMAS JoHNsoN, of St. Louis, Missouri, have made a new and use ful Improvement in Vapor-Burner Stoves, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, making part of this specification, in which- 7 Figure 1 is a front elevation of a vapor-burner stove having the improvement; Fig. 2, a vertical section, upon an enlarged scale, of the fountain of the stove; Fig. 3, a vertical section, upon a still larger scale, showing the piston and that portion of the supply-pipe in which the piston works, the piston-rod being dropped to allow the oil to flow through the piston to the burner; and Fig. 4, a section similar to that of Fig. 3, but showing the piston in side elevation and the piston-rod drawn upward against the under side of the piston.

The same letters of reference denote the same parts.

The aim of the present invention is to provide an improved means for extinguishing the burner whenever the fountain is opened.

A represents a vapor-burner stove having the present improvement. Aside from the improvement, the stove is of the usual description.

B B B represent the burners.

0 represents the fountain, and D represents the pipe leading from the fountain to the burners.

E represents a piston, which is held and adapted to be worked upward and downward in the pipe D. The piston consists, substantially, of the ring e and a packing, preferably in the form of the cup-leather e.

F represents the piston-rod. It extends from the piston upward through the fountain to above the fountain-cap 0. Its upper end is provided with a shoulder, preferably in the form of the knob f, and adapted to bear upon the upper side of the fountain-cap. The lower end of the piston rod is provided with a flange, preferably in the form of the nut f. The piston-rod is fitted loosely in the ring 6 of the piston, so that it can be dropped through the ring, and the nut f thereby lowered so as to be out of contact with the under side of the ring, and an annular space, 6 thereby provided within the ring, through which the oil can flow downward to the burner when desired. The piston-rod above the piston is also provided with a shoulder, preferably in the form of the nut f This nut is shaped so that when the piston-rod is depressed the nut or some part of it shall bear upon the upper side of the piston, and thereby cause the piston to be forced downward in the pipe D. The nut f 2 is also shaped so as to not interfere with the down ward flow of the oil through the piston. The piston-rod is also threaded at f to enable the nuts f to be screwed upward and downward, as desired, and thereby be relatively adjusted upon the piston-rod as desired.

The operation of the improvement is as follows: On opening the reservoir the piston-rod necessarily must be lifted. It isfirst drawn up from the position shown in Fig. 3 into the position shown in Fig. 4, in which the nut f bears against the under side of the piston. On continuing to lift the piston-rod the piston is drawn upward with it in the pipe D. This causes the burner or burners B to be extinguished. The pistonrod and piston can be entirely withdrawn from the pipe D and from the fountain.

In replacing the piston and rod the guide D, Fig. 2, is utilized. This guide is formed by extending the pipe D well upward into the fountain and sufficiently to enable the lower end of the piston-rod to be readily inserted in it, and thus be properly directed into its place in the pipe D. The extension D is slotted at d to admit the oil from the fountain into the pipe D. The pipe D below the piston E is provided with a valve, G, by means of which the flow of oil from the fountain can be entirely prevented when desired.

I am aware that it is not new to employ, in combination with the fountain-reservoir feeding-tube of a gas-stove, a piston by means of which a partial vacuum can be produced back of a burner for extinguishing the flame preparatory to filling the fountainreservoir with burning-fluid, and therefore I do not claim the fountain O, the pipe D, the slotted exten such a device, when broadly considercd. sion D, the piston E, the rod F, and the screw- I claimcap a, substantially as described. 1. The combination, substantially as de- THOS. JOHNSON. 5 scribed, of the fountain O, the pipe D, the Witnesses:

slotted extension D, and the piston E. CHARLES F. WHORF,

The combination, with the burner B, of WILLIAM BRANDON. 

